last night, comedian jon stewart took his turn. >> i would say you would admit it was not the optimal response, at least to the american people as far as us all being on the same page. >> well, here's what i'll say. >> yeah. >> if four americans get killed, it's not optimal. >> right. >> and we're going to fix it. and -- >> all of it. >> all of it. >> reporter: that remains a work in progress. the president has vowed to bring those responsible to justice, but although government officials suggest that members of an extremist group were involved in the attack, two hours were spent on the pat yoel of a crowded luxury hotel last night with a leader of that group, as he sipped a strawberry frappe. this afternoon, republicans in congress released new images from the compound where ambassador chris stevens and three had americans died, including earlier photos from previous attacks in benghazi, highlighting how precarious the security situation had been. they released this chilling june cable from ambassador stevens, warning islamic extremism was on the rise in the area. al qaeda's flag fly